howard



(No Model.)

0. M. HOWARD.

WATCH REGULATOR.

No. 314,672. Patented Ma,1".31, 1885.

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W m 56L UNITED STATES PATENT OFFICE.

CLARENCE M. HOWVARD, OF FREDONIA, NEIV YORK.

WATCH-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 314,672, dated March31, 1885.

I Application filed May 13, 1884. v (No model.)

To all whom it may c0ncern:

Be it known that I, CLARENCE M. HOWARD, of Fredonia, in the county ofChautauqua and State of New York, have invented certain new and usefulImprovements in Regulators for Time-Pieces; and I do hereby declare thefollowing to be afull, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the acconr panying drawings,which form part of this specification.

My invention relates to an improvement in regulators for time-pieces;and it consists in the combination of a screw threaded shaftwhichisswiveledin suitable bearings,atoothed wheel which meshes with thescrew upon the shaft, and which is provided with a wrist-pin, and thelever which is slotted at one end, so as to catch over the opening, andwhich has an arm for controlling the movement of the hair-spring at theother, as will be more fully described hereinafter.

The object of my invention is to provide a regulator for time-pieces, bymeans of which the finest possible adjustments can be made, and thusregulate the time to a second.

Figure 1 is a plan view of a regulator embodying my invention. Fig. 2 isa side clevation of the same, partly in section.

A represents the base, to which are secured suitable journals orbearings, B. In these bearings or journals is the shaft 0, having athread formed upon its center, as shown.

Recessed in the base A, and turning upon the pivotal bolt or screw D, isthe wheel E, which has suitable teeth formed upon its periphery to adaptit to engage with the screwthread upon the shaft. WVhen this shaft isturned in either direction, the wheel is caused to turn correspondingly.Projecting from the top of this wheel is the wrist-pin F, whichcatchesin the slot G, made in the end of the lever H, and thus serves tomove the lever for the purpose of acting upon the regulator when thescrew-shaft is turned. This lever is pivoted upon the raised portionlofthe base, and has projecting from this pivoted end the arm J. From theunder side of this arm J projects the pin 0, which engages with thehairspring of the watch or other time-piece for the purpose ofregulating the extent of its throw. WVhen the wheel is turned, thewristpin is caused to sweep around through a portion of a circle, andthis movement causes the lever to turn upon its pivot a correspondingdistance and effect the movement of the hairspring accordingly. Theshaft is provided with the opening or openings through one end, and aslot or cut in the other end, so that either a pin or the blade of aknife may be used to turn the shaft.

By the construction here shown a very slight movement can be given tothe regulator, and thus the time regulated to a second.

Having thus described my invention, I claim- In a regulator for awatch,the combination of the threaded shaft, and wheel having teeth to engagewith the thread on the shaft. and provided with a wrist pin, with thelever which is slotted at one end and provided with an arm andregulating-pins at the other, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

CLARENCE M. HOWARD.

\Vitnesses:

JOHN BAXTER, EDWARD D. HOWARD.

